Question 1

Which one of the following is an ion?

Accepted Answer

A)  B3+
B)  NaCl
C)  He
D)  (14
C)  
E)  none of the aboveF) A) and E)
G) A) and B)

Question 2

Given that the ion ClO3- is named chlorate, what is the ion ClO4- named?

Accepted Answer

A)  chloride
B)  chlorite
C)  hypochlorite
D)  perchlorite
E)  perchlorateF) B) and E)
G) None of the above

Question 3

The mineral manganosite is a compound of manganese-55 and oxygen-16. If 77% of the mass of manganosite is due to manganese, what is the empirical formula of manganosite?

Accepted Answer

A)  MnO
B)  Mn2O
C)  Mn2O2
D)  MnO2
E)  none of theseF) B) and C)
G) C) and D)

Question 4

The straight chain hydrocarbon that contains six carbon atoms is

Accepted Answer

A)  propane.
B)  butane.
C)  pentane.
D)  hexane.
E)  heptane.F) None of the above
G) A) and C)

Question 5

Two isotopes of an element differ in their

Accepted Answer

A)  symbol.
B)  atomic number.
C)  atomic mass.
D)  number of protons.
E)  number of electrons.F) B) and D)
G) A) and C)

Question 6

How many protons are there in one atom of xenon?

Accepted Answer

The answer of How many protons are there in one...

Question 7

Write the formula of ammonium chlorate.

Accepted Answer

The answer of Write the formula of ammonium chlorate....

Question 8

Name the following binary compound: NaH.

Accepted Answer

The answer of Name the following binary compound: NaH....

Question 9

The Stock system name for Mn2O7 is

Accepted Answer

A)  dimanganese heptaoxide.
B)  magnesium oxide.
C)  manganese(VII) oxide.
D)  manganese(II) oxide.
E)  manganese(III) oxide.F) A) and C)
G) B) and E)

Question 10

An atom of the isotope chlorine-37 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron)

Accepted Answer

A)  17 p, 18.45 n, 17 e
B)  17 p, 20 n, 7 e
C)  17 p, 20 n, 17 e
D)  17 p, 37 n, 17 e
E)  20 p, 17 n, 20 eF) A) and B)
G) A) and C)

Question 11

The formula for isopropyl alcohol is sometimes written as (CH3)2CHOH to better indicate how the atoms are connected. How many hydrogen atoms would be contained in 3 dozen isopropyl alcohol molecules?

Accepted Answer

Question 12

Give the formula for cobalt(II) chlorate dihydrate:

Accepted Answer

A)  CoCl2·2H2O
B)  CoClO3(H2O) 2
C)  Co(ClO3) 2(H2O) 2
D)  Co(ClO3) 2·2H2O
E)  Co2(ClO3) 3·2H2OF) A) and C)
G) C) and D)

Question 13

Give the formula of sulfuric acid.

Accepted Answer

The answer of Give the formula of sulfuric acid....

Question 14

Zircon is a mineral with the empirical formula ZrSiO4. If all the zirconium is 90Zr, all the silicon is 28Si, and all the oxygen is 16O, what mass of oxygen is present in 10. g of zircon?

Accepted Answer

A)  0.88 g
B)  1.2 g
C)  1.8 g
D)  3.5 g
E)  5.4 gF) A) and B)
G) C) and D)

Question 15

Almost all the mass of an atom is concentrated in the nucleus.

Accepted Answer

A) True 
 B)False

Question 16

In a cathode ray tube

Accepted Answer

A)  electrons pass from the anode to the cathode.
B)  electrons pass from the cathode to the anode.
C)  protons pass from the anode to the cathode.
D)  protons pass from the cathode to the anode.E) None of the above
F) B) and C)

Question 17

How many protons and electrons are present in one Br-  ion?

Accepted Answer

A)  35 p, 35 e
B)  80 p, 81 e
C)  35 p, 34 e
D)  35 p, 36 e
E)  80 p, 34 eF) B) and D)
G) A) and D)

Question 18

How many protons are there in one atom of magnesium?

Accepted Answer

The answer of How many protons are there in one...

Question 19

The mineral hausmannite is a compound of manganese-55 and oxygen-16. If 72% of the mass of hausmannite is due to manganese, what is the empirical formula of hausmannite?

Accepted Answer

A)  MnO
B)  Mn3O
C)  Mn3O4
D)  Mn4O3
E)  MnO3F) None of the above
G) A) and B)

Question 20

An empirical formula tell us which elements are present in a compound and gives us the simplest, whole-number ratio of the atoms of these elements in the compound.

Accepted Answer

A) True 
 B)False

Exam 2: Atoms, Molecules, and Ions

The straight chain hydrocarbon that contains six carbon atoms is

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How many protons are there in one atom of magnesium?

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In a cathode ray tube

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Two isotopes of an element differ in their

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Name the following binary compound: NaH.

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An atom of the isotope chlorine-37 consists of how many protons, neutrons, and electrons? (p = proton, n = neutron, e = electron)

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The mineral hausmannite is a compound of manganese-55 and oxygen-16. If 72% of the mass of hausmannite is due to manganese, what is the empirical formula of hausmannite?

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Almost all the mass of an atom is concentrated in the nucleus.

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Zircon is a mineral with the empirical formula ZrSiO4. If all the zirconium is 90Zr, all the silicon is 28Si, and all the oxygen is 16O, what mass of oxygen is present in 10. g of zircon?

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The Stock system name for Mn2O7 is

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Which one of the following is an ion?

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Given that the ion ClO3- is named chlorate, what is the ion ClO4- named?

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Give the formula for cobalt(II) chlorate dihydrate:

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Write the formula of ammonium chlorate.

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Give the formula of sulfuric acid.

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The formula for isopropyl alcohol is sometimes written as (CH3)2CHOH to better indicate how the atoms are connected. How many hydrogen atoms would be contained in 3 dozen isopropyl alcohol molecules?

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How many protons are there in one atom of xenon?

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An empirical formula tell us which elements are present in a compound and gives us the simplest, whole-number ratio of the atoms of these elements in the compound.

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The mineral manganosite is a compound of manganese-55 and oxygen-16. If 77% of the mass of manganosite is due to manganese, what is the empirical formula of manganosite?

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How many protons and electrons are present in one Br- ion?

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Zircon is a mineral with the empirical formula ZrSiO₄. If all the zirconium is ⁹⁰Zr, all the silicon is ²⁸Si, and all the oxygen is ¹⁶O, what mass of oxygen is present in 10. g of zircon?

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The Stock system name for Mn₂O₇ is

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Given that the ion ClO₃^- is named chlorate, what is the ion ClO₄^- named?

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The formula for isopropyl alcohol is sometimes written as (CH₃)₂CHOH to better indicate how the atoms are connected. How many hydrogen atoms would be contained in 3 dozen isopropyl alcohol molecules?

Correct Answer
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How many protons and electrons are present in one Br^- ion?

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